Last Update 22.10.2026 Update – 11. September 2026: We received feedback from our partners indicating that the issue has recurred. Fortinet has confirmed the issue and provided the following response:
FortiGuard Servers are not reachable
How to configure the FortiGate for a 3CX UC system with SIP trunk
3CX is a very widespread UC solution (phone system or also known as PBX). FortiGate is a very widespread firewall solution. Both of the products are very good in doing their thing. But to work together, a littlebit of configuration work is needed. Below you can find an example configuration…
How to upgrade a FortiClient EMS free-, trial- or evaluation-license
FortiClient EMS is a central endpoint management solution from Fortinet. There are three possible license types and it is not always possible to change the license state between different license types. This article will bring light into the dark of FortiClient EMS license upgrading. Free trial license A free trial…
Fortiguard DNS servers are enforcing EDNS policies
Some of you may have noticed that a Fortigate – configured to use the FortiGuard DNS Servers – is not resolving some DNS names anymore. Consequences can be that FQDN address objects can not be resolved or a configured mail server can not be used anymore.
FortiGuard DNS Rating Server (SDNS) unavailable
Last update from 12.05.2021 at 09:40 Swiss local time: We have noticed an improvement in the situation. Some rare rating timeouts still show up from time to time, but the majority of requests are being answered correctly. Also the DNS servers are working as usual again. We have noticed an…
What’s new with FortiOS 6.2: FortiGuard Requests
FortiOS v6.2 has been released in March this year and we are still gaining experience with this version. In this article we would like to draw you attention to the protocol which is used for FortiGuard service communication. Up to v6.0 udp has been used, with 6.2 the default protocol…